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. 2024 Aug 30;19(8):e0308528. doi: 10.1371/journal.pone.0308528

Fig 4. IgG4-related disease (IgG4-RD).

Fig 4

Axial (A) and coronal (B) enhanced T1 fat saturated images in a 58 year-old male show bilateral enlarged enhancing lacrimal glands (white arrows) and right infraorbital nerve enlargement (dashed white arrow), a constellation suggesting IgG4-RD. Non-contrast axial T1 (C) and STIR (D) images show numerous small intraparotid nodules (white arrows). Both radiologists favored inflammatory disease and IgG4-RD specifically given infraorbital nerve involvement & the pattern of bilateral lacrimal & parotid involvement, consistent with the clinical diagnosis.